Hi,I'm in the market for a sword to start practising the Walpurgis Fechtsystem (aka. i.33, aka. Sword & Buckler) From what I've seen people either use plastic waster swords, metal feder swords or even re-enactment swords (which seems a bit dangerous to me). I think I've been fencing long enough to go for a classical metal 'feder' sword as I got used to them when I lived in Germany since this is what seems to be the norm among people practising the Walpurgis Fechtsystem as it is done under HEMA rules?

What is the recommended stiffness level for a i.33 HEMA fencing feder?

Is there any of these manufactures that I should steer away from?

Is there anything to keep in mind that's safety related like, not to buy anything with sharp cross guards on hits etc? I'm assuming the swords in the above links can be used at most HEMA events.

Edit: Thought of another question: Does any of the makers I listed offer a one hand feder with a screwed on pommel and hilt that can be disassembled or are these feders usually peened? Some of my re-enactment swords got rattly hilts after a bit of use and this seems like a useful feature for a piece of training kit.